This commit allows you to use the Write Cbl Data debug option and new Load Cbl Data debug option to dump a link's data to SRAM
or load it from SRAM and pretend like you got it over the link cable.
This is useful for capturing the link process on gameboy and replay + debug it later in an emulator.
This allows us to log to mgba's logging window.
It will be very useful to debug issues.
But we only allow enabling this for debug builds for license reasons.
This adds a lot of the debug_mode.h options as an option you can modify at runtime.
I also moved both the text debug screen and the regular debug info screen in there.
And I added an option to start song playback.